范德瓦耳斯气体的压强问题

Van der Waals Gas Pressure Problem

在普通物理热学的教学中，对非理想气体物态方程——范德瓦耳斯方程的学习和讨论时，初学者常会有一些想不通的问题，常出现疑惑及误解，较为突出的是范德瓦耳斯气体的压强问题。为此，这里从范德瓦耳斯气体微观模型的提出，容器器壁附近范德瓦耳斯气体的压强，气体内部范德瓦耳斯气体的压强，气体的内压强（即气体由于分子间相互引力作用而引起的压强改变量），范德瓦耳斯方程的物理意义等几个方面进行讨论，从而使初学者得到正确的理解。

In general physics teaching of thermal to non-ideal gas equation of state - Van der Waals equation of learning and discussion, there will be some beginners often failing to figure out the problem, and it often occurs doubts and misunderstanding, The more prominent is the Van der Waals gas pressure problem. To this end, this paper proceeds its discussion from the Van der Waals gas micro-model proposed, the container wall near the Van der Waals gas pressure, the gas within the Van der Waals gas pressure, the gas within the pressure （ie gas due to intermolecular Mutual gravitational pressure changes caused by volume）and Van der Waals equation of several aspects of the physical meaning.So that beginners can properly understand.